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# Change Log
All notable changes to this project will be documented in this file. See [standard-version](https://github.com/conventional-changelog/standard-version) for commit guidelines.
<a name="11.1.1"></a>
## [11.1.1](https://github.com/yargs/yargs-parser/compare/v11.1.0...v11.1.1) (2018-11-19)
### Bug Fixes
* ensure empty string is added into argv._ ([#140](https://github.com/yargs/yargs-parser/issues/140)) ([79cda98](https://github.com/yargs/yargs-parser/commit/79cda98))
### Reverts
* make requiresArg work in conjunction with arrays ([#136](https://github.com/yargs/yargs-parser/issues/136)) ([f4a3063](https://github.com/yargs/yargs-parser/commit/f4a3063))
<a name="11.1.0"></a>
# [11.1.0](https://github.com/yargs/yargs-parser/compare/v11.0.0...v11.1.0) (2018-11-10)
### Bug Fixes
* handling of one char alias ([#139](https://github.com/yargs/yargs-parser/issues/139)) ([ee56e31](https://github.com/yargs/yargs-parser/commit/ee56e31))
### Features
* add halt-at-non-option configuration option ([#130](https://github.com/yargs/yargs-parser/issues/130)) ([a849fce](https://github.com/yargs/yargs-parser/commit/a849fce))
<a name="11.0.0"></a>
# [11.0.0](https://github.com/yargs/yargs-parser/compare/v10.1.0...v11.0.0) (2018-10-06)
### Bug Fixes
* flatten-duplicate-arrays:false for more than 2 arrays ([#128](https://github.com/yargs/yargs-parser/issues/128)) ([2bc395f](https://github.com/yargs/yargs-parser/commit/2bc395f))
* hyphenated flags combined with dot notation broke parsing ([#131](https://github.com/yargs/yargs-parser/issues/131)) ([dc788da](https://github.com/yargs/yargs-parser/commit/dc788da))
* make requiresArg work in conjunction with arrays ([#136](https://github.com/yargs/yargs-parser/issues/136)) ([77ae1d4](https://github.com/yargs/yargs-parser/commit/77ae1d4))
### Chores
* update dependencies ([6dc42a1](https://github.com/yargs/yargs-parser/commit/6dc42a1))
### Features
* also add camelCase array options ([#125](https://github.com/yargs/yargs-parser/issues/125)) ([08c0117](https://github.com/yargs/yargs-parser/commit/08c0117))
* array.type can now be provided, supporting coercion ([#132](https://github.com/yargs/yargs-parser/issues/132)) ([4b8cfce](https://github.com/yargs/yargs-parser/commit/4b8cfce))
### BREAKING CHANGES
* drops Node 4 support
* the argv object is now populated differently (correctly) when hyphens and dot notation are used in conjunction.
<a name="10.1.0"></a>
# [10.1.0](https://github.com/yargs/yargs-parser/compare/v10.0.0...v10.1.0) (2018-06-29)
### Features
* add `set-placeholder-key` configuration ([#123](https://github.com/yargs/yargs-parser/issues/123)) ([19386ee](https://github.com/yargs/yargs-parser/commit/19386ee))
<a name="10.0.0"></a>
# [10.0.0](https://github.com/yargs/yargs-parser/compare/v9.0.2...v10.0.0) (2018-04-04)
### Bug Fixes
* do not set boolean flags if not defined in `argv` ([#119](https://github.com/yargs/yargs-parser/issues/119)) ([f6e6599](https://github.com/yargs/yargs-parser/commit/f6e6599))
### BREAKING CHANGES
* `boolean` flags defined without a `default` value will now behave like other option type and won't be set in the parsed results when the user doesn't set the corresponding CLI arg.
Previous behavior:
```js
var parse = require('yargs-parser');
parse('--flag', {boolean: ['flag']});
// => { _: [], flag: true }
parse('--no-flag', {boolean: ['flag']});
// => { _: [], flag: false }
parse('', {boolean: ['flag']});
// => { _: [], flag: false }
```
New behavior:
```js
var parse = require('yargs-parser');
parse('--flag', {boolean: ['flag']});
// => { _: [], flag: true }
parse('--no-flag', {boolean: ['flag']});
// => { _: [], flag: false }
parse('', {boolean: ['flag']});
// => { _: [] } => flag not set similarly to other option type
```
<a name="9.0.2"></a>
## [9.0.2](https://github.com/yargs/yargs-parser/compare/v9.0.1...v9.0.2) (2018-01-20)
### Bug Fixes
* nargs was still aggressively consuming too many arguments ([9b28aad](https://github.com/yargs/yargs-parser/commit/9b28aad))
<a name="9.0.1"></a>
## [9.0.1](https://github.com/yargs/yargs-parser/compare/v9.0.0...v9.0.1) (2018-01-20)
### Bug Fixes
* nargs was consuming too many arguments ([4fef206](https://github.com/yargs/yargs-parser/commit/4fef206))
<a name="9.0.0"></a>
# [9.0.0](https://github.com/yargs/yargs-parser/compare/v8.1.0...v9.0.0) (2018-01-20)
### Features
* narg arguments no longer consume flag arguments ([#114](https://github.com/yargs/yargs-parser/issues/114)) ([60bb9b3](https://github.com/yargs/yargs-parser/commit/60bb9b3))
### BREAKING CHANGES
* arguments of form --foo, -abc, will no longer be consumed by nargs
<a name="8.1.0"></a>
# [8.1.0](https://github.com/yargs/yargs-parser/compare/v8.0.0...v8.1.0) (2017-12-20)
### Bug Fixes
* allow null config values ([#108](https://github.com/yargs/yargs-parser/issues/108)) ([d8b14f9](https://github.com/yargs/yargs-parser/commit/d8b14f9))
* ensure consistent parsing of dot-notation arguments ([#102](https://github.com/yargs/yargs-parser/issues/102)) ([c9bd79c](https://github.com/yargs/yargs-parser/commit/c9bd79c))
* implement [@antoniom](https://github.com/antoniom)'s fix for camel-case expansion ([3087e1d](https://github.com/yargs/yargs-parser/commit/3087e1d))
* only run coercion functions once, despite aliases. ([#76](https://github.com/yargs/yargs-parser/issues/76)) ([#103](https://github.com/yargs/yargs-parser/issues/103)) ([507aaef](https://github.com/yargs/yargs-parser/commit/507aaef))
* scientific notation circumvented bounds check ([#110](https://github.com/yargs/yargs-parser/issues/110)) ([3571f57](https://github.com/yargs/yargs-parser/commit/3571f57))
* tokenizer should ignore spaces at the beginning of the argString ([#106](https://github.com/yargs/yargs-parser/issues/106)) ([f34ead9](https://github.com/yargs/yargs-parser/commit/f34ead9))
### Features
* make combining arrays a configurable option ([#111](https://github.com/yargs/yargs-parser/issues/111)) ([c8bf536](https://github.com/yargs/yargs-parser/commit/c8bf536))
* merge array from arguments with array from config ([#83](https://github.com/yargs/yargs-parser/issues/83)) ([806ddd6](https://github.com/yargs/yargs-parser/commit/806ddd6))
<a name="8.0.0"></a>
# [8.0.0](https://github.com/yargs/yargs-parser/compare/v7.0.0...v8.0.0) (2017-10-05)
### Bug Fixes
* Ignore multiple spaces between arguments. ([#100](https://github.com/yargs/yargs-parser/issues/100)) ([d137227](https://github.com/yargs/yargs-parser/commit/d137227))
### Features
* allow configuration of prefix for boolean negation ([#94](https://github.com/yargs/yargs-parser/issues/94)) ([00bde7d](https://github.com/yargs/yargs-parser/commit/00bde7d))
* reworking how numbers are parsed ([#104](https://github.com/yargs/yargs-parser/issues/104)) ([fba00eb](https://github.com/yargs/yargs-parser/commit/fba00eb))
### BREAKING CHANGES
* strings that fail `Number.isSafeInteger()` are no longer coerced into numbers.
<a name="7.0.0"></a>
# [7.0.0](https://github.com/yargs/yargs-parser/compare/v6.0.1...v7.0.0) (2017-05-02)
### Chores
* revert populate-- logic ([#91](https://github.com/yargs/yargs-parser/issues/91)) ([6003e6d](https://github.com/yargs/yargs-parser/commit/6003e6d))
### BREAKING CHANGES
* populate-- now defaults to false.
<a name="6.0.1"></a>
## [6.0.1](https://github.com/yargs/yargs-parser/compare/v6.0.0...v6.0.1) (2017-05-01)
### Bug Fixes
* default '--' to undefined when not provided; this is closer to the array API ([#90](https://github.com/yargs/yargs-parser/issues/90)) ([4e739cc](https://github.com/yargs/yargs-parser/commit/4e739cc))
<a name="6.0.0"></a>
# [6.0.0](https://github.com/yargs/yargs-parser/compare/v4.2.1...v6.0.0) (2017-05-01)
### Bug Fixes
* environment variables should take precedence over config file ([#81](https://github.com/yargs/yargs-parser/issues/81)) ([76cee1f](https://github.com/yargs/yargs-parser/commit/76cee1f))
* parsing hints should apply for dot notation keys ([#86](https://github.com/yargs/yargs-parser/issues/86)) ([3e47d62](https://github.com/yargs/yargs-parser/commit/3e47d62))
### Chores
* upgrade to newest version of camelcase ([#87](https://github.com/yargs/yargs-parser/issues/87)) ([f1903aa](https://github.com/yargs/yargs-parser/commit/f1903aa))
### Features
* add -- option which allows arguments after the -- flag to be returned separated from positional arguments ([#84](https://github.com/yargs/yargs-parser/issues/84)) ([2572ca8](https://github.com/yargs/yargs-parser/commit/2572ca8))
* when parsing stops, we now populate "--" by default ([#88](https://github.com/yargs/yargs-parser/issues/88)) ([cd666db](https://github.com/yargs/yargs-parser/commit/cd666db))
### BREAKING CHANGES
* rather than placing arguments in "_", when parsing is stopped via "--"; we now populate an array called "--" by default.
* camelcase now requires Node 4+.
* environment variables will now override config files (args, env, config-file, config-object)
<a name="5.0.0"></a>
# [5.0.0](https://github.com/yargs/yargs-parser/compare/v4.2.1...v5.0.0) (2017-02-18)
### Bug Fixes
* environment variables should take precedence over config file ([#81](https://github.com/yargs/yargs-parser/issues/81)) ([76cee1f](https://github.com/yargs/yargs-parser/commit/76cee1f))
### BREAKING CHANGES
* environment variables will now override config files (args, env, config-file, config-object)
<a name="4.2.1"></a>
## [4.2.1](https://github.com/yargs/yargs-parser/compare/v4.2.0...v4.2.1) (2017-01-02)
### Bug Fixes
* flatten/duplicate regression ([#75](https://github.com/yargs/yargs-parser/issues/75)) ([68d68a0](https://github.com/yargs/yargs-parser/commit/68d68a0))
<a name="4.2.0"></a>
# [4.2.0](https://github.com/yargs/yargs-parser/compare/v4.1.0...v4.2.0) (2016-12-01)
### Bug Fixes
* inner objects in configs had their keys appended to top-level key when dot-notation was disabled ([#72](https://github.com/yargs/yargs-parser/issues/72)) ([0b1b5f9](https://github.com/yargs/yargs-parser/commit/0b1b5f9))
### Features
* allow multiple arrays to be provided, rather than always combining ([#71](https://github.com/yargs/yargs-parser/issues/71)) ([0f0fb2d](https://github.com/yargs/yargs-parser/commit/0f0fb2d))
<a name="4.1.0"></a>
# [4.1.0](https://github.com/yargs/yargs-parser/compare/v4.0.2...v4.1.0) (2016-11-07)
### Features
* apply coercions to default options ([#65](https://github.com/yargs/yargs-parser/issues/65)) ([c79052b](https://github.com/yargs/yargs-parser/commit/c79052b))
* handle dot notation boolean options ([#63](https://github.com/yargs/yargs-parser/issues/63)) ([02c3545](https://github.com/yargs/yargs-parser/commit/02c3545))
<a name="4.0.2"></a>
## [4.0.2](https://github.com/yargs/yargs-parser/compare/v4.0.1...v4.0.2) (2016-09-30)
### Bug Fixes
* whoops, let's make the assign not change the Object key order ([29d069a](https://github.com/yargs/yargs-parser/commit/29d069a))
<a name="4.0.1"></a>
## [4.0.1](https://github.com/yargs/yargs-parser/compare/v4.0.0...v4.0.1) (2016-09-30)
### Bug Fixes
* lodash.assign was deprecated ([#59](https://github.com/yargs/yargs-parser/issues/59)) ([5e7eb11](https://github.com/yargs/yargs-parser/commit/5e7eb11))
<a name="4.0.0"></a>
# [4.0.0](https://github.com/yargs/yargs-parser/compare/v3.2.0...v4.0.0) (2016-09-26)
### Bug Fixes
* coerce should be applied to the final objects and arrays created ([#57](https://github.com/yargs/yargs-parser/issues/57)) ([4ca69da](https://github.com/yargs/yargs-parser/commit/4ca69da))
### BREAKING CHANGES
* coerce is no longer applied to individual arguments in an implicit array.
<a name="3.2.0"></a>
# [3.2.0](https://github.com/yargs/yargs-parser/compare/v3.1.0...v3.2.0) (2016-08-13)
### Features
* coerce full array instead of each element ([#51](https://github.com/yargs/yargs-parser/issues/51)) ([cc4dc56](https://github.com/yargs/yargs-parser/commit/cc4dc56))
<a name="3.1.0"></a>
# [3.1.0](https://github.com/yargs/yargs-parser/compare/v3.0.0...v3.1.0) (2016-08-09)
### Bug Fixes
* address pkgConf parsing bug outlined in [#37](https://github.com/yargs/yargs-parser/issues/37) ([#45](https://github.com/yargs/yargs-parser/issues/45)) ([be76ee6](https://github.com/yargs/yargs-parser/commit/be76ee6))
* better parsing of negative values ([#44](https://github.com/yargs/yargs-parser/issues/44)) ([2e43692](https://github.com/yargs/yargs-parser/commit/2e43692))
* check aliases when guessing defaults for arguments fixes [#41](https://github.com/yargs/yargs-parser/issues/41) ([#43](https://github.com/yargs/yargs-parser/issues/43)) ([f3e4616](https://github.com/yargs/yargs-parser/commit/f3e4616))
### Features
* added coerce option, for providing specialized argument parsing ([#42](https://github.com/yargs/yargs-parser/issues/42)) ([7b49cd2](https://github.com/yargs/yargs-parser/commit/7b49cd2))
<a name="3.0.0"></a>
# [3.0.0](https://github.com/yargs/yargs-parser/compare/v2.4.1...v3.0.0) (2016-08-07)
### Bug Fixes
* parsing issue with numeric character in group of options ([#19](https://github.com/yargs/yargs-parser/issues/19)) ([f743236](https://github.com/yargs/yargs-parser/commit/f743236))
* upgraded lodash.assign ([5d7fdf4](https://github.com/yargs/yargs-parser/commit/5d7fdf4))
### BREAKING CHANGES
* subtle change to how values are parsed in a group of single-character arguments.
* _first released in 3.1.0, better handling of negative values should be considered a breaking change._
<a name="2.4.1"></a>
## [2.4.1](https://github.com/yargs/yargs-parser/compare/v2.4.0...v2.4.1) (2016-07-16)
### Bug Fixes
* **count:** do not increment a default value ([#39](https://github.com/yargs/yargs-parser/issues/39)) ([b04a189](https://github.com/yargs/yargs-parser/commit/b04a189))
<a name="2.4.0"></a>
# [2.4.0](https://github.com/yargs/yargs-parser/compare/v2.3.0...v2.4.0) (2016-04-11)
### Features
* **environment:** Support nested options in environment variables ([#26](https://github.com/yargs/yargs-parser/issues/26)) thanks [@elas7](https://github.com/elas7) \o/ ([020778b](https://github.com/yargs/yargs-parser/commit/020778b))
<a name="2.3.0"></a>
# [2.3.0](https://github.com/yargs/yargs-parser/compare/v2.2.0...v2.3.0) (2016-04-09)
### Bug Fixes
* **boolean:** fix for boolean options with non boolean defaults (#20) ([2dbe86b](https://github.com/yargs/yargs-parser/commit/2dbe86b)), closes [(#20](https://github.com/(/issues/20)
* **package:** remove tests from tarball ([0353c0d](https://github.com/yargs/yargs-parser/commit/0353c0d))
* **parsing:** handle calling short option with an empty string as the next value. ([a867165](https://github.com/yargs/yargs-parser/commit/a867165))
* boolean flag when next value contains the strings 'true' or 'false'. ([69941a6](https://github.com/yargs/yargs-parser/commit/69941a6))
* update dependencies; add standard-version bin for next release (#24) ([822d9d5](https://github.com/yargs/yargs-parser/commit/822d9d5))
### Features
* **configuration:** Allow to pass configuration objects to yargs-parser ([0780900](https://github.com/yargs/yargs-parser/commit/0780900))
* **normalize:** allow normalize to work with arrays ([e0eaa1a](https://github.com/yargs/yargs-parser/commit/e0eaa1a))

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Copyright (c) 2016, Contributors
Permission to use, copy, modify, and/or distribute this software
for any purpose with or without fee is hereby granted, provided
that the above copyright notice and this permission notice
appear in all copies.
THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES
OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE
LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES
OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION,
ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.

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# yargs-parser
[![Build Status](https://travis-ci.org/yargs/yargs-parser.svg)](https://travis-ci.org/yargs/yargs-parser)
[![Coverage Status](https://coveralls.io/repos/yargs/yargs-parser/badge.svg?branch=)](https://coveralls.io/r/yargs/yargs-parser?branch=master)
[![NPM version](https://img.shields.io/npm/v/yargs-parser.svg)](https://www.npmjs.com/package/yargs-parser)
[![Standard Version](https://img.shields.io/badge/release-standard%20version-brightgreen.svg)](https://github.com/conventional-changelog/standard-version)
The mighty option parser used by [yargs](https://github.com/yargs/yargs).
visit the [yargs website](http://yargs.js.org/) for more examples, and thorough usage instructions.
<img width="250" src="https://raw.githubusercontent.com/yargs/yargs-parser/master/yargs-logo.png">
## Example
```sh
npm i yargs-parser --save
```
```js
var argv = require('yargs-parser')(process.argv.slice(2))
console.log(argv)
```
```sh
node example.js --foo=33 --bar hello
{ _: [], foo: 33, bar: 'hello' }
```
_or parse a string!_
```js
var argv = require('./')('--foo=99 --bar=33')
console.log(argv)
```
```sh
{ _: [], foo: 99, bar: 33 }
```
Convert an array of mixed types before passing to `yargs-parser`:
```js
var parse = require('yargs-parser')
parse(['-f', 11, '--zoom', 55].join(' ')) // <-- array to string
parse(['-f', 11, '--zoom', 55].map(String)) // <-- array of strings
```
## API
### require('yargs-parser')(args, opts={})
Parses command line arguments returning a simple mapping of keys and values.
**expects:**
* `args`: a string or array of strings representing the options to parse.
* `opts`: provide a set of hints indicating how `args` should be parsed:
* `opts.alias`: an object representing the set of aliases for a key: `{alias: {foo: ['f']}}`.
* `opts.array`: indicate that keys should be parsed as an array: `{array: ['foo', 'bar']}`.
Indicate that keys should be parsed as an array and coerced to booleans / numbers:
`{array: [{ key: 'foo', boolean: true }, {key: 'bar', number: true}]}`.
* `opts.boolean`: arguments should be parsed as booleans: `{boolean: ['x', 'y']}`.
* `opts.config`: indicate a key that represents a path to a configuration file (this file will be loaded and parsed).
* `opts.coerce`: provide a custom synchronous function that returns a coerced value from the argument provided
(or throws an error), e.g. `{coerce: {foo: function (arg) {return modifiedArg}}}`.
* `opts.count`: indicate a key that should be used as a counter, e.g., `-vvv` = `{v: 3}`.
* `opts.default`: provide default values for keys: `{default: {x: 33, y: 'hello world!'}}`.
* `opts.envPrefix`: environment variables (`process.env`) with the prefix provided should be parsed.
* `opts.narg`: specify that a key requires `n` arguments: `{narg: {x: 2}}`.
* `opts.normalize`: `path.normalize()` will be applied to values set to this key.
* `opts.string`: keys should be treated as strings (even if they resemble a number `-x 33`).
* `opts.configuration`: provide configuration options to the yargs-parser (see: [configuration](#configuration)).
* `opts.number`: keys should be treated as numbers.
* `opts['--']`: arguments after the end-of-options flag `--` will be set to the `argv.['--']` array instead of being set to the `argv._` array.
**returns:**
* `obj`: an object representing the parsed value of `args`
* `key/value`: key value pairs for each argument and their aliases.
* `_`: an array representing the positional arguments.
* [optional] `--`: an array with arguments after the end-of-options flag `--`.
### require('yargs-parser').detailed(args, opts={})
Parses a command line string, returning detailed information required by the
yargs engine.
**expects:**
* `args`: a string or array of strings representing options to parse.
* `opts`: provide a set of hints indicating how `args`, inputs are identical to `require('yargs-parser')(args, opts={})`.
**returns:**
* `argv`: an object representing the parsed value of `args`
* `key/value`: key value pairs for each argument and their aliases.
* `_`: an array representing the positional arguments.
* `error`: populated with an error object if an exception occurred during parsing.
* `aliases`: the inferred list of aliases built by combining lists in `opts.alias`.
* `newAliases`: any new aliases added via camel-case expansion.
* `configuration`: the configuration loaded from the `yargs` stanza in package.json.
<a name="configuration"></a>
### Configuration
The yargs-parser applies several automated transformations on the keys provided
in `args`. These features can be turned on and off using the `configuration` field
of `opts`.
```js
var parsed = parser(['--no-dice'], {
configuration: {
'boolean-negation': false
}
})
```
### short option groups
* default: `true`.
* key: `short-option-groups`.
Should a group of short-options be treated as boolean flags?
```sh
node example.js -abc
{ _: [], a: true, b: true, c: true }
```
_if disabled:_
```sh
node example.js -abc
{ _: [], abc: true }
```
### camel-case expansion
* default: `true`.
* key: `camel-case-expansion`.
Should hyphenated arguments be expanded into camel-case aliases?
```sh
node example.js --foo-bar
{ _: [], 'foo-bar': true, fooBar: true }
```
_if disabled:_
```sh
node example.js --foo-bar
{ _: [], 'foo-bar': true }
```
### dot-notation
* default: `true`
* key: `dot-notation`
Should keys that contain `.` be treated as objects?
```sh
node example.js --foo.bar
{ _: [], foo: { bar: true } }
```
_if disabled:_
```sh
node example.js --foo.bar
{ _: [], "foo.bar": true }
```
### parse numbers
* default: `true`
* key: `parse-numbers`
Should keys that look like numbers be treated as such?
```sh
node example.js --foo=99.3
{ _: [], foo: 99.3 }
```
_if disabled:_
```sh
node example.js --foo=99.3
{ _: [], foo: "99.3" }
```
### boolean negation
* default: `true`
* key: `boolean-negation`
Should variables prefixed with `--no` be treated as negations?
```sh
node example.js --no-foo
{ _: [], foo: false }
```
_if disabled:_
```sh
node example.js --no-foo
{ _: [], "no-foo": true }
```
### combine arrays
* default: `false`
* key: `combine-arrays`
Should arrays be combined when provided by both command line arguments and
a configuration file.
### duplicate arguments array
* default: `true`
* key: `duplicate-arguments-array`
Should arguments be coerced into an array when duplicated:
```sh
node example.js -x 1 -x 2
{ _: [], x: [1, 2] }
```
_if disabled:_
```sh
node example.js -x 1 -x 2
{ _: [], x: 2 }
```
### flatten duplicate arrays
* default: `true`
* key: `flatten-duplicate-arrays`
Should array arguments be coerced into a single array when duplicated:
```sh
node example.js -x 1 2 -x 3 4
{ _: [], x: [1, 2, 3, 4] }
```
_if disabled:_
```sh
node example.js -x 1 2 -x 3 4
{ _: [], x: [[1, 2], [3, 4]] }
```
### negation prefix
* default: `no-`
* key: `negation-prefix`
The prefix to use for negated boolean variables.
```sh
node example.js --no-foo
{ _: [], foo: false }
```
_if set to `quux`:_
```sh
node example.js --quuxfoo
{ _: [], foo: false }
```
### populate --
* default: `false`.
* key: `populate--`
Should unparsed flags be stored in `--` or `_`.
_If disabled:_
```sh
node example.js a -b -- x y
{ _: [ 'a', 'x', 'y' ], b: true }
```
_If enabled:_
```sh
node example.js a -b -- x y
{ _: [ 'a' ], '--': [ 'x', 'y' ], b: true }
```
### set placeholder key
* default: `false`.
* key: `set-placeholder-key`.
Should a placeholder be added for keys not set via the corresponding CLI argument?
_If disabled:_
```sh
node example.js -a 1 -c 2
{ _: [], a: 1, c: 2 }
```
_If enabled:_
```sh
node example.js -a 1 -c 2
{ _: [], a: 1, b: undefined, c: 2 }
```
### halt at non-option
* default: `false`.
* key: `halt-at-non-option`.
Should parsing stop at the first text argument? This is similar to how e.g. `ssh` parses its command line.
_If disabled:_
```sh
node example.js -a run b -x y
{ _: [ 'run', 'b', 'y' ], a: true, x: true }
```
_If enabled:_
```sh
node example.js -a run b -x y
{ _: [ 'run', 'b', '-x', 'y' ], a: true }
```
## Special Thanks
The yargs project evolves from optimist and minimist. It owes its
existence to a lot of James Halliday's hard work. Thanks [substack](https://github.com/substack) **beep** **boop** \o/
## License
ISC

866
node_modules/yargs-parser/index.js generated vendored Normal file
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var camelCase = require('camelcase')
var decamelize = require('decamelize')
var path = require('path')
var tokenizeArgString = require('./lib/tokenize-arg-string')
var util = require('util')
function parse (args, opts) {
if (!opts) opts = {}
// allow a string argument to be passed in rather
// than an argv array.
args = tokenizeArgString(args)
// aliases might have transitive relationships, normalize this.
var aliases = combineAliases(opts.alias || {})
var configuration = assign({
'short-option-groups': true,
'camel-case-expansion': true,
'dot-notation': true,
'parse-numbers': true,
'boolean-negation': true,
'negation-prefix': 'no-',
'duplicate-arguments-array': true,
'flatten-duplicate-arrays': true,
'populate--': false,
'combine-arrays': false,
'set-placeholder-key': false,
'halt-at-non-option': false
}, opts.configuration)
var defaults = opts.default || {}
var configObjects = opts.configObjects || []
var envPrefix = opts.envPrefix
var notFlagsOption = configuration['populate--']
var notFlagsArgv = notFlagsOption ? '--' : '_'
var newAliases = {}
// allow a i18n handler to be passed in, default to a fake one (util.format).
var __ = opts.__ || function (str) {
return util.format.apply(util, Array.prototype.slice.call(arguments))
}
var error = null
var flags = {
aliases: {},
arrays: {},
bools: {},
strings: {},
numbers: {},
counts: {},
normalize: {},
configs: {},
defaulted: {},
nargs: {},
coercions: {},
keys: []
}
var negative = /^-[0-9]+(\.[0-9]+)?/
var negatedBoolean = new RegExp('^--' + configuration['negation-prefix'] + '(.+)')
;[].concat(opts.array).filter(Boolean).forEach(function (opt) {
var key = opt.key || opt
// assign to flags[bools|strings|numbers]
const assignment = Object.keys(opt).map(function (key) {
return ({
boolean: 'bools',
string: 'strings',
number: 'numbers'
})[key]
}).filter(Boolean).pop()
// assign key to be coerced
if (assignment) {
flags[assignment][key] = true
}
flags.arrays[key] = true
flags.keys.push(key)
})
;[].concat(opts.boolean).filter(Boolean).forEach(function (key) {
flags.bools[key] = true
flags.keys.push(key)
})
;[].concat(opts.string).filter(Boolean).forEach(function (key) {
flags.strings[key] = true
flags.keys.push(key)
})
;[].concat(opts.number).filter(Boolean).forEach(function (key) {
flags.numbers[key] = true
flags.keys.push(key)
})
;[].concat(opts.count).filter(Boolean).forEach(function (key) {
flags.counts[key] = true
flags.keys.push(key)
})
;[].concat(opts.normalize).filter(Boolean).forEach(function (key) {
flags.normalize[key] = true
flags.keys.push(key)
})
Object.keys(opts.narg || {}).forEach(function (k) {
flags.nargs[k] = opts.narg[k]
flags.keys.push(k)
})
Object.keys(opts.coerce || {}).forEach(function (k) {
flags.coercions[k] = opts.coerce[k]
flags.keys.push(k)
})
if (Array.isArray(opts.config) || typeof opts.config === 'string') {
;[].concat(opts.config).filter(Boolean).forEach(function (key) {
flags.configs[key] = true
})
} else {
Object.keys(opts.config || {}).forEach(function (k) {
flags.configs[k] = opts.config[k]
})
}
// create a lookup table that takes into account all
// combinations of aliases: {f: ['foo'], foo: ['f']}
extendAliases(opts.key, aliases, opts.default, flags.arrays)
// apply default values to all aliases.
Object.keys(defaults).forEach(function (key) {
(flags.aliases[key] || []).forEach(function (alias) {
defaults[alias] = defaults[key]
})
})
var argv = { _: [] }
Object.keys(flags.bools).forEach(function (key) {
if (Object.prototype.hasOwnProperty.call(defaults, key)) {
setArg(key, defaults[key])
setDefaulted(key)
}
})
var notFlags = []
for (var i = 0; i < args.length; i++) {
var arg = args[i]
var broken
var key
var letters
var m
var next
var value
// -- separated by =
if (arg.match(/^--.+=/) || (
!configuration['short-option-groups'] && arg.match(/^-.+=/)
)) {
// Using [\s\S] instead of . because js doesn't support the
// 'dotall' regex modifier. See:
// http://stackoverflow.com/a/1068308/13216
m = arg.match(/^--?([^=]+)=([\s\S]*)$/)
// nargs format = '--f=monkey washing cat'
if (checkAllAliases(m[1], flags.nargs)) {
args.splice(i + 1, 0, m[2])
i = eatNargs(i, m[1], args)
// arrays format = '--f=a b c'
} else if (checkAllAliases(m[1], flags.arrays) && args.length > i + 1) {
args.splice(i + 1, 0, m[2])
i = eatArray(i, m[1], args)
} else {
setArg(m[1], m[2])
}
} else if (arg.match(negatedBoolean) && configuration['boolean-negation']) {
key = arg.match(negatedBoolean)[1]
setArg(key, false)
// -- seperated by space.
} else if (arg.match(/^--.+/) || (
!configuration['short-option-groups'] && arg.match(/^-.+/)
)) {
key = arg.match(/^--?(.+)/)[1]
// nargs format = '--foo a b c'
if (checkAllAliases(key, flags.nargs)) {
i = eatNargs(i, key, args)
// array format = '--foo a b c'
} else if (checkAllAliases(key, flags.arrays) && args.length > i + 1) {
i = eatArray(i, key, args)
} else {
next = args[i + 1]
if (next !== undefined && (!next.match(/^-/) ||
next.match(negative)) &&
!checkAllAliases(key, flags.bools) &&
!checkAllAliases(key, flags.counts)) {
setArg(key, next)
i++
} else if (/^(true|false)$/.test(next)) {
setArg(key, next)
i++
} else {
setArg(key, defaultForType(guessType(key, flags)))
}
}
// dot-notation flag seperated by '='.
} else if (arg.match(/^-.\..+=/)) {
m = arg.match(/^-([^=]+)=([\s\S]*)$/)
setArg(m[1], m[2])
// dot-notation flag seperated by space.
} else if (arg.match(/^-.\..+/)) {
next = args[i + 1]
key = arg.match(/^-(.\..+)/)[1]
if (next !== undefined && !next.match(/^-/) &&
!checkAllAliases(key, flags.bools) &&
!checkAllAliases(key, flags.counts)) {
setArg(key, next)
i++
} else {
setArg(key, defaultForType(guessType(key, flags)))
}
} else if (arg.match(/^-[^-]+/) && !arg.match(negative)) {
letters = arg.slice(1, -1).split('')
broken = false
for (var j = 0; j < letters.length; j++) {
next = arg.slice(j + 2)
if (letters[j + 1] && letters[j + 1] === '=') {
value = arg.slice(j + 3)
key = letters[j]
// nargs format = '-f=monkey washing cat'
if (checkAllAliases(key, flags.nargs)) {
args.splice(i + 1, 0, value)
i = eatNargs(i, key, args)
// array format = '-f=a b c'
} else if (checkAllAliases(key, flags.arrays) && args.length > i + 1) {
args.splice(i + 1, 0, value)
i = eatArray(i, key, args)
} else {
setArg(key, value)
}
broken = true
break
}
if (next === '-') {
setArg(letters[j], next)
continue
}
// current letter is an alphabetic character and next value is a number
if (/[A-Za-z]/.test(letters[j]) &&
/^-?\d+(\.\d*)?(e-?\d+)?$/.test(next)) {
setArg(letters[j], next)
broken = true
break
}
if (letters[j + 1] && letters[j + 1].match(/\W/)) {
setArg(letters[j], next)
broken = true
break
} else {
setArg(letters[j], defaultForType(guessType(letters[j], flags)))
}
}
key = arg.slice(-1)[0]
if (!broken && key !== '-') {
// nargs format = '-f a b c'
if (checkAllAliases(key, flags.nargs)) {
i = eatNargs(i, key, args)
// array format = '-f a b c'
} else if (checkAllAliases(key, flags.arrays) && args.length > i + 1) {
i = eatArray(i, key, args)
} else {
next = args[i + 1]
if (next !== undefined && (!/^(-|--)[^-]/.test(next) ||
next.match(negative)) &&
!checkAllAliases(key, flags.bools) &&
!checkAllAliases(key, flags.counts)) {
setArg(key, next)
i++
} else if (/^(true|false)$/.test(next)) {
setArg(key, next)
i++
} else {
setArg(key, defaultForType(guessType(key, flags)))
}
}
}
} else if (arg === '--') {
notFlags = args.slice(i + 1)
break
} else if (configuration['halt-at-non-option']) {
notFlags = args.slice(i)
break
} else {
argv._.push(maybeCoerceNumber('_', arg))
}
}
// order of precedence:
// 1. command line arg
// 2. value from env var
// 3. value from config file
// 4. value from config objects
// 5. configured default value
applyEnvVars(argv, true) // special case: check env vars that point to config file
applyEnvVars(argv, false)
setConfig(argv)
setConfigObjects()
applyDefaultsAndAliases(argv, flags.aliases, defaults)
applyCoercions(argv)
if (configuration['set-placeholder-key']) setPlaceholderKeys(argv)
// for any counts either not in args or without an explicit default, set to 0
Object.keys(flags.counts).forEach(function (key) {
if (!hasKey(argv, key.split('.'))) setArg(key, 0)
})
// '--' defaults to undefined.
if (notFlagsOption && notFlags.length) argv[notFlagsArgv] = []
notFlags.forEach(function (key) {
argv[notFlagsArgv].push(key)
})
// how many arguments should we consume, based
// on the nargs option?
function eatNargs (i, key, args) {
var ii
const toEat = checkAllAliases(key, flags.nargs)
// nargs will not consume flag arguments, e.g., -abc, --foo,
// and terminates when one is observed.
var available = 0
for (ii = i + 1; ii < args.length; ii++) {
if (!args[ii].match(/^-[^0-9]/)) available++
else break
}
if (available < toEat) error = Error(__('Not enough arguments following: %s', key))
const consumed = Math.min(available, toEat)
for (ii = i + 1; ii < (consumed + i + 1); ii++) {
setArg(key, args[ii])
}
return (i + consumed)
}
// if an option is an array, eat all non-hyphenated arguments
// following it... YUM!
// e.g., --foo apple banana cat becomes ["apple", "banana", "cat"]
function eatArray (i, key, args) {
var start = i + 1
var argsToSet = []
var multipleArrayFlag = i > 0
for (var ii = i + 1; ii < args.length; ii++) {
if (/^-/.test(args[ii]) && !negative.test(args[ii])) {
if (ii === start) {
setArg(key, defaultForType('array'))
}
multipleArrayFlag = true
break
}
i = ii
argsToSet.push(args[ii])
}
if (multipleArrayFlag) {
setArg(key, argsToSet.map(function (arg) {
return processValue(key, arg)
}))
} else {
argsToSet.forEach(function (arg) {
setArg(key, arg)
})
}
return i
}
function setArg (key, val) {
unsetDefaulted(key)
if (/-/.test(key) && configuration['camel-case-expansion']) {
var alias = key.split('.').map(function (prop) {
return camelCase(prop)
}).join('.')
addNewAlias(key, alias)
}
var value = processValue(key, val)
var splitKey = key.split('.')
setKey(argv, splitKey, value)
// handle populating aliases of the full key
if (flags.aliases[key]) {
flags.aliases[key].forEach(function (x) {
x = x.split('.')
setKey(argv, x, value)
})
}
// handle populating aliases of the first element of the dot-notation key
if (splitKey.length > 1 && configuration['dot-notation']) {
;(flags.aliases[splitKey[0]] || []).forEach(function (x) {
x = x.split('.')
// expand alias with nested objects in key
var a = [].concat(splitKey)
a.shift() // nuke the old key.
x = x.concat(a)
setKey(argv, x, value)
})
}
// Set normalize getter and setter when key is in 'normalize' but isn't an array
if (checkAllAliases(key, flags.normalize) && !checkAllAliases(key, flags.arrays)) {
var keys = [key].concat(flags.aliases[key] || [])
keys.forEach(function (key) {
argv.__defineSetter__(key, function (v) {
val = path.normalize(v)
})
argv.__defineGetter__(key, function () {
return typeof val === 'string' ? path.normalize(val) : val
})
})
}
}
function addNewAlias (key, alias) {
if (!(flags.aliases[key] && flags.aliases[key].length)) {
flags.aliases[key] = [alias]
newAliases[alias] = true
}
if (!(flags.aliases[alias] && flags.aliases[alias].length)) {
addNewAlias(alias, key)
}
}
function processValue (key, val) {
// handle parsing boolean arguments --foo=true --bar false.
if (checkAllAliases(key, flags.bools) || checkAllAliases(key, flags.counts)) {
if (typeof val === 'string') val = val === 'true'
}
var value = maybeCoerceNumber(key, val)
// increment a count given as arg (either no value or value parsed as boolean)
if (checkAllAliases(key, flags.counts) && (isUndefined(value) || typeof value === 'boolean')) {
value = increment
}
// Set normalized value when key is in 'normalize' and in 'arrays'
if (checkAllAliases(key, flags.normalize) && checkAllAliases(key, flags.arrays)) {
if (Array.isArray(val)) value = val.map(path.normalize)
else value = path.normalize(val)
}
return value
}
function maybeCoerceNumber (key, value) {
if (!checkAllAliases(key, flags.strings) && !checkAllAliases(key, flags.coercions)) {
const shouldCoerceNumber = isNumber(value) && configuration['parse-numbers'] && (
Number.isSafeInteger(Math.floor(value))
)
if (shouldCoerceNumber || (!isUndefined(value) && checkAllAliases(key, flags.numbers))) value = Number(value)
}
return value
}
// set args from config.json file, this should be
// applied last so that defaults can be applied.
function setConfig (argv) {
var configLookup = {}
// expand defaults/aliases, in-case any happen to reference
// the config.json file.
applyDefaultsAndAliases(configLookup, flags.aliases, defaults)
Object.keys(flags.configs).forEach(function (configKey) {
var configPath = argv[configKey] || configLookup[configKey]
if (configPath) {
try {
var config = null
var resolvedConfigPath = path.resolve(process.cwd(), configPath)
if (typeof flags.configs[configKey] === 'function') {
try {
config = flags.configs[configKey](resolvedConfigPath)
} catch (e) {
config = e
}
if (config instanceof Error) {
error = config
return
}
} else {
config = require(resolvedConfigPath)
}
setConfigObject(config)
} catch (ex) {
if (argv[configKey]) error = Error(__('Invalid JSON config file: %s', configPath))
}
}
})
}
// set args from config object.
// it recursively checks nested objects.
function setConfigObject (config, prev) {
Object.keys(config).forEach(function (key) {
var value = config[key]
var fullKey = prev ? prev + '.' + key : key
// if the value is an inner object and we have dot-notation
// enabled, treat inner objects in config the same as
// heavily nested dot notations (foo.bar.apple).
if (typeof value === 'object' && value !== null && !Array.isArray(value) && configuration['dot-notation']) {
// if the value is an object but not an array, check nested object
setConfigObject(value, fullKey)
} else {
// setting arguments via CLI takes precedence over
// values within the config file.
if (!hasKey(argv, fullKey.split('.')) || (flags.defaulted[fullKey]) || (flags.arrays[fullKey] && configuration['combine-arrays'])) {
setArg(fullKey, value)
}
}
})
}
// set all config objects passed in opts
function setConfigObjects () {
if (typeof configObjects === 'undefined') return
configObjects.forEach(function (configObject) {
setConfigObject(configObject)
})
}
function applyEnvVars (argv, configOnly) {
if (typeof envPrefix === 'undefined') return
var prefix = typeof envPrefix === 'string' ? envPrefix : ''
Object.keys(process.env).forEach(function (envVar) {
if (prefix === '' || envVar.lastIndexOf(prefix, 0) === 0) {
// get array of nested keys and convert them to camel case
var keys = envVar.split('__').map(function (key, i) {
if (i === 0) {
key = key.substring(prefix.length)
}
return camelCase(key)
})
if (((configOnly && flags.configs[keys.join('.')]) || !configOnly) && (!hasKey(argv, keys) || flags.defaulted[keys.join('.')])) {
setArg(keys.join('.'), process.env[envVar])
}
}
})
}
function applyCoercions (argv) {
var coerce
var applied = {}
Object.keys(argv).forEach(function (key) {
if (!applied.hasOwnProperty(key)) { // If we haven't already coerced this option via one of its aliases
coerce = checkAllAliases(key, flags.coercions)
if (typeof coerce === 'function') {
try {
var value = coerce(argv[key])
;([].concat(flags.aliases[key] || [], key)).forEach(ali => {
applied[ali] = argv[ali] = value
})
} catch (err) {
error = err
}
}
}
})
}
function setPlaceholderKeys (argv) {
flags.keys.forEach((key) => {
// don't set placeholder keys for dot notation options 'foo.bar'.
if (~key.indexOf('.')) return
if (typeof argv[key] === 'undefined') argv[key] = undefined
})
return argv
}
function applyDefaultsAndAliases (obj, aliases, defaults) {
Object.keys(defaults).forEach(function (key) {
if (!hasKey(obj, key.split('.'))) {
setKey(obj, key.split('.'), defaults[key])
;(aliases[key] || []).forEach(function (x) {
if (hasKey(obj, x.split('.'))) return
setKey(obj, x.split('.'), defaults[key])
})
}
})
}
function hasKey (obj, keys) {
var o = obj
if (!configuration['dot-notation']) keys = [keys.join('.')]
keys.slice(0, -1).forEach(function (key) {
o = (o[key] || {})
})
var key = keys[keys.length - 1]
if (typeof o !== 'object') return false
else return key in o
}
function setKey (obj, keys, value) {
var o = obj
if (!configuration['dot-notation']) keys = [keys.join('.')]
keys.slice(0, -1).forEach(function (key, index) {
if (typeof o === 'object' && o[key] === undefined) {
o[key] = {}
}
if (typeof o[key] !== 'object' || Array.isArray(o[key])) {
// ensure that o[key] is an array, and that the last item is an empty object.
if (Array.isArray(o[key])) {
o[key].push({})
} else {
o[key] = [o[key], {}]
}
// we want to update the empty object at the end of the o[key] array, so set o to that object
o = o[key][o[key].length - 1]
} else {
o = o[key]
}
})
var key = keys[keys.length - 1]
var isTypeArray = checkAllAliases(keys.join('.'), flags.arrays)
var isValueArray = Array.isArray(value)
var duplicate = configuration['duplicate-arguments-array']
if (value === increment) {
o[key] = increment(o[key])
} else if (Array.isArray(o[key])) {
if (duplicate && isTypeArray && isValueArray) {
o[key] = configuration['flatten-duplicate-arrays'] ? o[key].concat(value) : (Array.isArray(o[key][0]) ? o[key] : [o[key]]).concat([value])
} else if (!duplicate && Boolean(isTypeArray) === Boolean(isValueArray)) {
o[key] = value
} else {
o[key] = o[key].concat([value])
}
} else if (o[key] === undefined && isTypeArray) {
o[key] = isValueArray ? value : [value]
} else if (duplicate && !(o[key] === undefined || checkAllAliases(key, flags.bools) || checkAllAliases(keys.join('.'), flags.bools) || checkAllAliases(key, flags.counts))) {
o[key] = [ o[key], value ]
} else {
o[key] = value
}
}
// extend the aliases list with inferred aliases.
function extendAliases () {
Array.prototype.slice.call(arguments).forEach(function (obj) {
Object.keys(obj || {}).forEach(function (key) {
// short-circuit if we've already added a key
// to the aliases array, for example it might
// exist in both 'opts.default' and 'opts.key'.
if (flags.aliases[key]) return
flags.aliases[key] = [].concat(aliases[key] || [])
// For "--option-name", also set argv.optionName
flags.aliases[key].concat(key).forEach(function (x) {
if (/-/.test(x) && configuration['camel-case-expansion']) {
var c = camelCase(x)
if (c !== key && flags.aliases[key].indexOf(c) === -1) {
flags.aliases[key].push(c)
newAliases[c] = true
}
}
})
// For "--optionName", also set argv['option-name']
flags.aliases[key].concat(key).forEach(function (x) {
if (x.length > 1 && /[A-Z]/.test(x) && configuration['camel-case-expansion']) {
var c = decamelize(x, '-')
if (c !== key && flags.aliases[key].indexOf(c) === -1) {
flags.aliases[key].push(c)
newAliases[c] = true
}
}
})
flags.aliases[key].forEach(function (x) {
flags.aliases[x] = [key].concat(flags.aliases[key].filter(function (y) {
return x !== y
}))
})
})
})
}
// check if a flag is set for any of a key's aliases.
function checkAllAliases (key, flag) {
var isSet = false
var toCheck = [].concat(flags.aliases[key] || [], key)
toCheck.forEach(function (key) {
if (flag[key]) isSet = flag[key]
})
return isSet
}
function setDefaulted (key) {
[].concat(flags.aliases[key] || [], key).forEach(function (k) {
flags.defaulted[k] = true
})
}
function unsetDefaulted (key) {
[].concat(flags.aliases[key] || [], key).forEach(function (k) {
delete flags.defaulted[k]
})
}
// return a default value, given the type of a flag.,
// e.g., key of type 'string' will default to '', rather than 'true'.
function defaultForType (type) {
var def = {
boolean: true,
string: '',
number: undefined,
array: []
}
return def[type]
}
// given a flag, enforce a default type.
function guessType (key, flags) {
var type = 'boolean'
if (checkAllAliases(key, flags.strings)) type = 'string'
else if (checkAllAliases(key, flags.numbers)) type = 'number'
else if (checkAllAliases(key, flags.arrays)) type = 'array'
return type
}
function isNumber (x) {
if (typeof x === 'number') return true
if (/^0x[0-9a-f]+$/i.test(x)) return true
return /^[-+]?(?:\d+(?:\.\d*)?|\.\d+)(e[-+]?\d+)?$/.test(x)
}
function isUndefined (num) {
return num === undefined
}
return {
argv: argv,
error: error,
aliases: flags.aliases,
newAliases: newAliases,
configuration: configuration
}
}
// if any aliases reference each other, we should
// merge them together.
function combineAliases (aliases) {
var aliasArrays = []
var change = true
var combined = {}
// turn alias lookup hash {key: ['alias1', 'alias2']} into
// a simple array ['key', 'alias1', 'alias2']
Object.keys(aliases).forEach(function (key) {
aliasArrays.push(
[].concat(aliases[key], key)
)
})
// combine arrays until zero changes are
// made in an iteration.
while (change) {
change = false
for (var i = 0; i < aliasArrays.length; i++) {
for (var ii = i + 1; ii < aliasArrays.length; ii++) {
var intersect = aliasArrays[i].filter(function (v) {
return aliasArrays[ii].indexOf(v) !== -1
})
if (intersect.length) {
aliasArrays[i] = aliasArrays[i].concat(aliasArrays[ii])
aliasArrays.splice(ii, 1)
change = true
break
}
}
}
}
// map arrays back to the hash-lookup (de-dupe while
// we're at it).
aliasArrays.forEach(function (aliasArray) {
aliasArray = aliasArray.filter(function (v, i, self) {
return self.indexOf(v) === i
})
combined[aliasArray.pop()] = aliasArray
})
return combined
}
function assign (defaults, configuration) {
var o = {}
configuration = configuration || {}
Object.keys(defaults).forEach(function (k) {
o[k] = defaults[k]
})
Object.keys(configuration).forEach(function (k) {
o[k] = configuration[k]
})
return o
}
// this function should only be called when a count is given as an arg
// it is NOT called to set a default value
// thus we can start the count at 1 instead of 0
function increment (orig) {
return orig !== undefined ? orig + 1 : 1
}
function Parser (args, opts) {
var result = parse(args.slice(), opts)
return result.argv
}
// parse arguments and return detailed
// meta information, aliases, etc.
Parser.detailed = function (args, opts) {
return parse(args.slice(), opts)
}
module.exports = Parser

41
node_modules/yargs-parser/lib/tokenize-arg-string.js generated vendored Normal file
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// take an un-split argv string and tokenize it.
module.exports = function (argString) {
if (Array.isArray(argString)) return argString
argString = argString.trim()
var i = 0
var prevC = null
var c = null
var opening = null
var args = []
for (var ii = 0; ii < argString.length; ii++) {
prevC = c
c = argString.charAt(ii)
// split on spaces unless we're in quotes.
if (c === ' ' && !opening) {
if (!(prevC === ' ')) {
i++
}
continue
}
// don't split the string if we're in matching
// opening or closing single and double quotes.
if (c === opening) {
if (!args[i]) args[i] = ''
opening = null
continue
} else if ((c === "'" || c === '"') && !opening) {
opening = c
continue
}
if (!args[i]) args[i] = ''
args[i] += c
}
return args
}

51
node_modules/yargs-parser/package.json generated vendored Normal file
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@ -0,0 +1,51 @@
{
"name": "yargs-parser",
"version": "11.1.1",
"description": "the mighty option parser used by yargs",
"main": "index.js",
"scripts": {
"test": "nyc mocha test/*.js",
"posttest": "standard",
"coverage": "nyc report --reporter=text-lcov | coveralls",
"release": "standard-version"
},
"repository": {
"url": "git@github.com:yargs/yargs-parser.git"
},
"keywords": [
"argument",
"parser",
"yargs",
"command",
"cli",
"parsing",
"option",
"args",
"argument"
],
"author": "Ben Coe <ben@npmjs.com>",
"license": "ISC",
"devDependencies": {
"chai": "^4.2.0",
"coveralls": "^3.0.2",
"mocha": "^5.2.0",
"nyc": "^13.0.1",
"standard": "^12.0.1",
"standard-version": "^4.4.0"
},
"dependencies": {
"camelcase": "^5.0.0",
"decamelize": "^1.2.0"
},
"files": [
"lib",
"index.js"
],
"engine": {
"node": ">=6"
}
,"_resolved": "https://registry.npmjs.org/yargs-parser/-/yargs-parser-11.1.1.tgz"
,"_integrity": "sha512-C6kB/WJDiaxONLJQnF8ccx9SEeoTTLek8RVbaOIsrAUS8VrBEXfmeSnCZxygc+XC2sNMBIwOOnfcxiynjHsVSQ=="
,"_from": "yargs-parser@11.1.1"
}